docs: def prepare_request(self, request):
          """Include the request ID, if available, in the outgoing request"""
          try:
              request_id = local.request_id
          except AttributeError:
              request_id = NO_REQUEST_ID
  
          if self.request_id_header and request_id != NO_REQUEST_ID:
              request.headers[self.request_id_header] = request_id
  
          return super(Session, self).prepare_request(request)